adaptive fault tolerant qos abstract

7/29/2019 Adaptive Fault Tolerant QoS ABSTRACT

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Adaptive Fault Tolerant QoS Control Algorithms for Maximizing

System Lifetime of Query-Based Wireless Sensor Networks

ABSTRACT:

Data sensing and retrieval in wireless sensor systems have a widespread application in

areas such as security and surveillance monitoring, and command and control in battlefields. In

query-based wireless sensor systems, a user would issue a query and expect a response to be

returned within the deadline. While the use of fault tolerance mechanisms through redundancy

improves query reliability in the presence of unreliable wireless communication and sensor

faults, it could cause the energy of the system to be quickly depleted. Therefore, there is an

inherent tradeoff between query reliability vs. energy consumption in query-based wireless

sensor systems. In this paper, we develop adaptive fault tolerant quality of service (QoS) control

algorithms based on hop-by-hop data delivery utilizing source and path redundancy, with the

goal to satisfy application QoS requirements while prolonging the lifetime of the sensor system.

We develop a mathematical model for the lifetime of the sensor system as a function of system

parameters including the source and path redundancy levels utilized. We discover that there

exists optimal source and path redundancy under which the lifetime of the system is

maximized while satisfying application QoS requirements. Numerical data are presented and

validated through extensive simulation, with physical interpretations given, to demonstrate the

feasibility of our algorithm design.

EXISTING SYSTEM:

Existing research efforts related to applying redundancy to satisfy QoS requirements in

query-based WSNs fall into three categories: traditional end-to-end QoS, reliability assurance,

and application specific QoS .

Traditional end-to-end QoS solutions are based on the concept of end-to-end QoS

requirements. The problem is that it may not be feasible to implement end-to-end QoS in WSNs


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due to the complexity and high cost of the protocols for resource constrained sensors. This

method does not consider the reliability issue.

Disadvantages:

o Complexity and high cost of the protocols for resource constrained sensors

o Does not consider the reliability issue.

o Does not consider energy issues.

o Data delivery such as reliability and timelines are not considered.

PROPOSED SYSTEM:

In this paper, we develop adaptive fault tolerant quality of service (QoS) control

algorithms based on hop-by-hop data delivery utilizing source and path redundancy, with the

goal to satisfy application QoS requirements while prolonging the lifetime of the sensor system.

We develop a mathematical model for the lifetime of the sensor system as a function of

system parameters including the source and path redundancy levels utilized. We discover

that there exists optimal source and path redundancy under which the lifetime of the system

is maximized while satisfying application QoS requirements.

Advantages:

o To applying redundancy to satisfy application specified reliability and timeliness

requirements for query-based WSNs.

o We develop the notion of path and source level redundancy

o Lifetime of the system is maximized.

o Timeliness, Multiple data delivery speed options.

o Reliability, Multi-path forwarding.


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MODULES:

General Approach

Software Fault

Data Aggregation

Forward Traffic

HARDWARE & SOFTWARE REQUIREMENTS:

HARDWARE REQUIREMENTS:

System : Pentium IV 2.4 GHz.

Hard Disk : 40 GB

Ram : 512 MB.

SOFTWARE REQUIREMENTS:

Operating system : Windows XP Professional.

Coding Language : C#.NET

IDE : Microsoft visual studio .Net 2008

adaptive fault tolerant qos abstract

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